313940 has 24 divisors (see below), whose sum is σ = 719712. Its totient is φ = 114080.

The previous prime is 313933. The next prime is 313949. The reversal of 313940 is 49313.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an Ulam number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 313940.

It is not an unprimeable number, because it can be changed into a prime (313949) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 494 + ... + 933.

It is an arithmetic number, because the mean of its divisors is an integer number (29988).

2³¹³⁹⁴⁰ is an apocalyptic number.

It is an amenable number.

313940 is an abundant number, since it is smaller than the sum of its proper divisors (405772).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

313940 is a wasteful number, since it uses less digits than its factorization.

313940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1447 (or 1445 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 20.

The square root of 313940 is about 560.3034891913. The cubic root of 313940 is about 67.9645143571.

The spelling of 313940 in words is "three hundred thirteen thousand, nine hundred forty".